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- W2262005631 abstract "The cleavage of the di-μ-hydroxo bridges of [Co(nta)(μ-OH)] 2 2– by en and N,N-Et 2 en (en = ethylenediamine and N,N-Et 2 en = N,N-diethylethylene-diamine) has been investigated. [Co(nta)(μ-OH)] 2 2– equilibrates rapidly in aqueous basic solutions, yielding a mono-μ-hydroxo-bridged Co(III) complex [pK OH = 3.3(1)] and both these species react with the incoming ligand to form different ion associated species. These, in turn, react to form presumably a ligand-substituted, mono-bridged species, [(nta)(OH)Co-μ-OH-Co(nta)(L-L)] 2– , which upon ring-closure rapidly formthe products.Values for k 2 , the preferred pathway for these reactions, vary between 1.42(4) × 10 –2 s –1 (en) and 3.2(1) × 10 –3 s –1 (N,N-Et 2 en) at 25.0°C, μ = 0.2 M (NaClO 4 ). KEY WORDS : Bridge cleavage, cobalt(III), kinetics, mechanism, nitrilotriacetate." @default.
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- W2262005631 date "2006-01-01" @default.
- W2262005631 modified "2023-09-24" @default.
- W2262005631 title "Di-μ-hydroxo Bridge Cleavage Reactions between [Co(nta)(μ-OH)] 2 2– and various N,N-Bidentate Ligands" @default.
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